nbd-client.c File Reference

#include "config.h"
#include "lfs.h"
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <sys/types.h>
#include <unistd.h>
#include <netinet/tcp.h>
#include <netinet/in.h>
#include <netdb.h>
#include "netdb-compat.h"
#include <stdio.h>
#include <fcntl.h>
#include <syslog.h>
#include <stdlib.h>
#include <sys/mount.h>
#include <sys/mman.h>
#include <signal.h>
#include <errno.h>
#include <getopt.h>
#include <stdarg.h>
#include <stdbool.h>
#include <time.h>
#include <linux/ioctl.h>
#include "cliserv.h"

Go to the source code of this file.

Macros
#define	MY_NAME   "nbd_client"
#define	NBDC_DO_LIST   1
#define	CHECK_LEN   field_len = strcspn(loc, fsep); ws_len = strspn(loc+field_len, fsep); if(field_len > line_len || line_len <= 0) { goto out; }
#define	MOVE_NEXT   line_len -= field_len + ws_len; loc += field_len + ws_len

Functions
int	check_conn (char *devname, int do_print)
int	opennet (char *name, char *portstr, int sdp)
int	openunix (const char *path)
void	ask_list (int sock)
void	negotiate (int sock, u64 *rsize64, uint16_t *flags, char *name, uint32_t needed_flags, uint32_t client_flags, uint32_t do_opts)
bool	get_from_config (char *cfgname, char **name_ptr, char **dev_ptr, char **hostn_ptr, int *bs, int *timeout, int *persist, int *swap, int *sdp, int *b_unix, char **port)
void	setsizes (int nbd, u64 size64, int blocksize, u32 flags)
void	set_timeout (int nbd, int timeout)
void	finish_sock (int sock, int nbd, int swap)
static int	oom_adjust (const char *file, const char *value)
void	usage (char *errmsg,...)
void	disconnect (char *device)
int	main (int argc, char *argv[])

Macro Definition Documentation

#define CHECK_LEN   field_len = strcspn(loc, fsep); ws_len = strspn(loc+field_len, fsep); if(field_len > line_len || line_len <= 0) { goto out; }

Referenced by get_from_config().

#define MOVE_NEXT   line_len -= field_len + ws_len; loc += field_len + ws_len

Referenced by get_from_config().

#define MY_NAME   "nbd_client"

Definition at line 47 of file nbd-client.c.

Referenced by main().

#define NBDC_DO_LIST   1

Definition at line 54 of file nbd-client.c.

Referenced by main(), and negotiate().

Function Documentation

void ask_list

(

int

sock

)

Definition at line 170 of file nbd-client.c.

References err(), htonll, len, magic, NBD_OPT_ABORT, NBD_OPT_LIST, NBD_REP_ACK, NBD_REP_ERR_POLICY, NBD_REP_FLAG_ERROR, NBD_REP_SERVER, ntohll(), opts_magic, and rep_magic.

Referenced by negotiate().

int check_conn	(	char *	devname,
		int	do_print
	)

Definition at line 56 of file nbd-client.c.

References len.

Referenced by main().

void disconnect

(

char *

device

)

Definition at line 540 of file nbd-client.c.

References err(), NBD_CLEAR_SOCK, and NBD_DISCONNECT.

Referenced by main().

void finish_sock	(	int	sock,
		int	nbd,
		int	swap
	)

Definition at line 490 of file nbd-client.c.

References err(), and NBD_SET_SOCK.

Referenced by main().

bool get_from_config	(	char *	cfgname,
		char **	name_ptr,
		char **	dev_ptr,
		char **	hostn_ptr,
		int *	bs,
		int *	timeout,
		int *	persist,
		int *	swap,
		int *	sdp,
		int *	b_unix,
		char **	port
	)

Definition at line 346 of file nbd-client.c.

References CHECK_LEN, MOVE_NEXT, and SYSCONFDIR.

Referenced by main().

int main	(	int	argc,
		char *	argv[]
	)

Definition at line 554 of file nbd-client.c.

References check_conn(), disconnect(), err(), finish_sock(), G_GNUC_UNUSED, get_from_config(), logging(), MY_NAME, NBD_CLEAR_SOCK, NBD_DEFAULT_PORT, NBD_DO_IT, NBD_FLAG_C_FIXED_NEWSTYLE, NBD_FLAG_FIXED_NEWSTYLE, NBDC_DO_LIST, negotiate(), oom_adjust(), opennet(), openunix(), set_timeout(), setsizes(), and usage().

void negotiate	(	int	sock,
		u64 *	rsize64,
		uint16_t *	flags,
		char *	name,
		uint32_t	needed_flags,
		uint32_t	client_flags,
		uint32_t	do_opts
	)

Definition at line 268 of file nbd-client.c.

References ask_list(), cliserv_magic, err(), htonll, INIT_PASSWD, magic, NBD_FLAG_C_NO_ZEROES, NBD_FLAG_NO_ZEROES, NBD_OPT_EXPORT_NAME, NBDC_DO_LIST, ntohll(), opts_magic, and readit().

Referenced by main().

static int oom_adjust ( const char *  file, const char *  value  )

static

Definition at line 501 of file nbd-client.c.

References len.

Referenced by main().

int opennet	(	char *	name,
		char *	portstr,
		int	sdp
	)

Definition at line 88 of file nbd-client.c.

References AI_NUMERICSERV, err(), err_nonfatal(), and setmysockopt().

Referenced by main().

int openunix

(

const char *

path

)

Definition at line 144 of file nbd-client.c.

References err_nonfatal().

Referenced by main().

void set_timeout	(	int	nbd,
		int	timeout
	)

Definition at line 482 of file nbd-client.c.

References err(), and NBD_SET_TIMEOUT.

Referenced by main().

void setsizes	(	int	nbd,
		u64	size64,
		int	blocksize,
		u32	flags
	)

Definition at line 456 of file nbd-client.c.

References err(), NBD_CLEAR_SOCK, NBD_FLAG_READ_ONLY, NBD_SET_BLKSIZE, NBD_SET_FLAGS, and NBD_SET_SIZE_BLOCKS.

Referenced by main().

void usage	(	char *	errmsg,
			...
	)

Definition at line 515 of file nbd-client.c.

References PACKAGE_VERSION.

Referenced by main().